Calcium/Magnesium Natural Minerals & Trace Elements is a 100 percent natural and unique mineral-rich carbonate compound with abundant calcium, magnesium and trace elements. It contains 11 of the known 17 essential minerals for optimum health, and 80 minerals altogether. MezotraceŽ is the most complete source of naturally occurring combinations and amounts of primary and essential minerals and trace elements (micronutrients) known to exist.